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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Diversity and conservation of Hong Kong bryophytes

Zhang, Li, January 2001 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2001. / Includes bibliographical references.
22

Biodiversity, ecology and taxonomy of saprobic fungi on palm fronds /

Yanna. January 2001 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2001. / Includes bibliographical references.
23

Examining the link between macrophyte diversity, bacterial diversity, and denitrification function in wetlands

Gilbert, Janice M. January 2004 (has links)
Thesis (Ph. D.)--Ohio State University, 2004. / Document formatted into pages; contains xiii, 234 p. Includes bibliographical references. Abstract available online via OhioLINK's ETD Center; full text release delayed at author's request until 2005 June 1.
24

Effectiveness of protected area management in Thailand /

Maneesai, Ronasit. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2004. / Printout. Includes bibliographical references (leaves 155-201). Also available on the World Wide Web.
25

Traditional environmental knowledge and its implications for modern conservation among the Hewa of Papua New Guinea

Thomas, William H., January 1999 (has links)
Thesis (Ph. D.)--Arizona State University, 1999. / Vita. Includes bibliographical references (leaves [139]-165).
26

Abundance and Diversity of the Nectar Microbiome in Rhododendron Catawbiense Varies With Elevation

Barker, Daniel A, Khan, Ayesha, Martel, Carlos, Kaverina, Ekaterina, Yampolsky, L. Y., Arceo-Gómez, Gerardo 06 April 2022 (has links)
The plant nectar microbiome (NMB) primarily composed of fungi and bacteria can qualitatively and quantitively affect floral rewards and ultimately impact plant-pollinator interactions and plant reproductive success. Evidence suggests that changes in microenvironmental conditions across spatial gradients can induce changes in the floral nectar microbiome, leading to microbiome variation within species. Specifically, changes in biotic and abiotic conditions across an elevation gradient (i.e. pollinator community composition, temperature, UV exposure, nutrient availability) have the potential to induce variation NMB composition and abundance. However, this has been little explored. For instance, we could expect that the diversity and abundance of the NMB will decrease with elevation as the growing conditions become less favorable (e.g. lower temperatures). In this study, we evaluate spatial variation in nectar microbiome composition, diversity, and abundance in populations of Rhododendron catawbiense at high (H) and low (L) elevations separated by over 1000ft in Roan Mountain, TN. Nectar samples were collected, plated, quantified and isolated. Fungal ITS sequences were obtained from individual colonies by Sanger sequencing and directly from nectar samples by Nanopore NGS. Preliminary results suggest that elevation can affect fungal abundance and composition in the NMB. We found 10 fungal species inhabiting the nectar of R. catawbiense (H= 4; L= 9). We also observed variation in nectar yeast abundance with more than 30x as many CFUs (colony forming units) (H= 1.89 ±10.64; L=38.43 ±1.39.12) and twice as many RPKMs (reads per kilobase matched) (H= 2.8x107 ± 2.46x107; L=5.5x107 ±3.6x107) on average at the lower elevation. Interestingly, R. catawbiense NMB in the lower elevation had a broader diversity of species (Simpson Diversity Index: H= 0.52; L= 0.95), perhaps as a result of more favorable growing conditions. This trend is largely associated with higher abundance of Metschnikowiaceae yeast OTUs and lower abundance of potentially pathogenic Basidyomycete OTUs. Overall, results indicate that elevation can mediate changes in the composition and abundance of microorganisms in the NMB, which in turn can lead to differences in pollinator community composition and plant reproductive success. These results highlight the need evaluate within-species variation in NMB at large spatial scales and its potential consequences for plant reproductive success, plant-pollinator interactions and plant community dynamics. This is particularly important in the face of human-mediated environmental disturbances that can alter plant-microbe interactions.
27

Prospecting for biodiversity the search for legal and institutional frameworks /

Carrizosa, Santiago. January 1996 (has links)
Thesis (Ph. D.)--University of Arizona, 1996. / Includes bibliographical references (leaves 263-271).
28

A biodiversity conservation policy and legal framework for Hong Kong /

Felley, Mary Louise. January 1996 (has links)
Thesis (M. Sc.)--University of Hong Kong, 1996. / Includes bibliographical references (leaf 82-90).
29

Lactarius of the Dominican Republic and Belize /

Lacey, Lance C. January 2004 (has links)
Thesis (All-College Honors) - - State University of New York College at Cortland, 2004 - - Department of Biology. / Includes bibliographical references (p.59-60).
30

Sustainability and biodiversity : the impact, alternative design and prospects of restoration of channelized lowland streams in Hong Kong /

Chan, Pui-lok, Bosco. January 2001 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2001. / Includes bibliographical references (leaves 325-365).

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